Type-writing machine.



PATENTED JAN. 13

- P. F. NILSON- TYPE WRITING MACHINE.

. APPLICATION FILED Nqv. 2, 1899.

N0 MODEL.

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Z//7z/. ,flf dla VINVFLNTOR I ATTORNEY No. 718,505. v PATENTED JANI13,1903.

P. F. NILSON. TYPE WRITING MACHINE.- S APPLICATION FILED NOV. 2, 1899.

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NITED STATES PATENT OFFICE.

PETER F. NILSON, OF JEROME, ARIZONA TERRITORY, ASSIGNOR, BY MESNEASSIGNMENTS, TO THE UNION TYPEWRITER COMPANY, OF JERSEY CITY, NEWJERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 718,505, dated January13, 1903.

i Q 7 Application file d November 2, 1899. Serial No. 73 5,640%. (Nomodel.)

T at whom it may concern:

Be it known that I, PETER F.NILsoN,-a citizen of the United States, anda resident of Jerome, in the county of Yavapai and'Territory of Arizona,have invented certain new and useful Improvements in Type-WritingMachines, of which the following is a specification.

The object of the invention is to provide a new and improved type actionfor type-writing machines arranged to positively and accurately actuatethe type-bars to insure proper printing visible to the operator.

The invention consists principally of a type-bar mounted to swing andformed at its fulcrum end with teeth engaged by a toothed rack fitted toslide and actuated from the corresponding key.

The invention also consists of certain parts and details andcombinations of the same, as will be fully described hereinafter andthen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar characters of reference indicate corresponding parts inall the figures.

Figure 1 is a vertical section through the middle of a type-writingmachine, showing my improved type-action, the type-bar being in thenormal position. Fig. 2 is a similar view of a portion of the samemechanism, the type-bar being seen in the striking position. Fig. 3 isan enlarged side view of one of the type-bars. Fig. 4 is a like view ofthe rack 5 for moving the type-bar, and Fig. 5 is an enlarged side viewof a part of the key-lever. Fig. 6 is a front sectional elevation takenjust forward of the casing or segment 0.

The improved typewriting machine is mounted on asuitably-constructedframe A, supporting a pivot B for the severalparallel key-levers or keys B, arranged horizontally one alongside theother andeach provided at its forward end with a finger-piece B adaptedto be pressed by the operator, each key being held normally in anuppermost position by a suitable spring B (See Fig. 1.)

The rear or fulcrum end of each key B is provided with anupwardly-extending fork B, the middle portion 13 of which passes looselythrough a transverse slot (1, formed in the segmental basket or casingC, forming guideways for the type-bars D, the latter swinging from apivot 0 held in the vertically-arranged segment basket or casing C. 5The arms or upwardly-extending portions B vary in length and are ofgradually-increasing length from the center of the system outwardly inboth directions The gnideways in the casing O are arranged radially, sothat the several bars D of the curved system swing with their types Dupwardly and rearwardly to a common point to make the impression, ashereinafter more fully described.

On the outer end of each bar D is arranged an inking device E forsupplying the necessary ink to the type D previous to making theimpression. This deviceEis hereinafter more fully described in detail.

The fulcrum end of each type-bar D is made in the shape of a hook Dhooking onto the pivot-pin (J and formed at its periphery with a seriesof teeth D D D irregular in shape, as indicated in Fig. 3. The saidteeth of the type-bar D are adapted to be engaged bycorrespondinglyshaped teeth F, F and F formed on the top of a rack F,fitted to slide in the upper portion of the transverse slot G, the endsof the said rack F being engaged by the vertical members B of the fork13, while the bottom of the rack rides on the segmental top surface B ofthe middle portion B of the fork,.as plainly indicated in Figs. 1 and 2.

When the key B is in a normal uppermost 8 position, as shown in Fig. 1,then the corresponding type-barDeXtends horizontally with the teeth Dand F in mesh and with the fiat under side of the tooth D restingon theflat top surface F of the rack F. The type-bar D also rests with itsunder side on a bearing-ring 0 held on the front of the casing C, so asto support the said type-bar in a horizontal position, as will bereadily understood by reference to Fig. 1. 95

It will be seen that the key-levers or hellcranks B extend rearwardlybeneath the typebars D, the latter being horizontally arranged andstriking rearwardly. The finger keys or pieces B are arranged in frontof the typebars. The upper ends of the upwardly-extending portions B ofthe bell-cranks extend to points in proximity to the toothed hubs of thetypo-bars, and the racks F being loosely engaged or placed between thesaid hubs and said upper ends of the lever devices 13 Now when the key Bis pressed then the fork B swings forward and by the rear member 13 ofthe fork causes a forward shifting of the rack F, so that the tooth F byengaging the tooth D imparts a swinging motion to the type-bar D, andthen the next following teeth of the rack F move in engagement with therespective teeth D D on the type-bar D, so that the latterswings into avertical position to finally make with its type D an impression on thepaper held on the impression-roller G.

\Vhen the type-bar moves into an uppermost position, as shown in Fig. 2,then the segmental part D on the fulcrum end of said type-bar moves intoa corresponding notch F on the rack F, so as to prevent further swingingof the said type-bar D. Thus the latter, both in its lowermost anduppermost position, is prevented from moving forward by the specialconstruction of the fulcrum and of the type-bar and that of the rack F,as above described.

The engaging teeth F F F and D D and D are made irregular in shape, soas to insure a proper pull on the fulcrum end of the type-bar when thekey B is pressed and at the same time afford sufficient freedom betweenthe contacting teeth to insure a proper swinging of the type-bar Dwithout danger of its sticking in the guideways C of the hasket orcasing C.

When the impression is made and the operator releases the pressure onthe fingerpiece 13 of the key B, then the spring B causes an upward andreturn movement of the key, so that the front member B of the fork B inswinging rearward shifts the rack F back to its previous position, andin doing so the teeth F F and F by engaging with the teeth D D and Dcause a return movement of the type-bar D, so that the latter swingsback into its normal position. (Shown in Fig. 1.)

The downward movement of the type-bar D is aided by the weight of thelatter; but it is evident that both the upward-swinging as well as thedownward movement of the typebar is fully controlled by the rack F,which is moved laterally forward and backward by the action of the keyB. Thus the operator in pressing and releasing the key B has fullcontrol of the movement of the type-bar to insure an accurate and properimpression of the type D on the paper held on the impression-roller G.

The basket or casing O is formed on an arc of a circle, and the slots 0for the sliding racks are in radial planes from the striking position onthe front of the platen. The bellcranks B on the inner ends of thekey-levers are accordingly bent toward the middle of the machine moreand more as their position changes from the middle to the sides, so asto allow the planes of the racks to coincide with the planes of theradial type-bars.

The inking device E for each of the typebars D is provided with a blockE, secured on the free end of a spring E fastened to the under side ofthe type-bar, as plainly shown in the drawings. In the block E isarranged an inking-pad E extending under a foot E integral with andprojecting from the block E, so as to bring the pad E directly over thetype D, and thus supply the latter with the ink for printing.

By reference to Figs. 2 and 3 it will be seen that the upper end of theblock E extends a suitable distance beyond the face of the type D, sothat when the type-bar is swung upward then the upper end of the saidblock strikes the impression-roller G, so that the block E is caused toswing rearward with the spring E as the fulcrum and move the pad E fromthe type D to permit the latter to pass on to the paper to make theimpression.

As soon as the type-barD swings downward then the spring E in movingback to its normal position brings the block E again to its formerplace, with the pad E moving back onto the type D to again supply thelatter with ink. It will be seen that in this form of my invention theroller or platen Gr serves as a common intercepting device forautomatically arresting the inkers and separating them from theirrespective types as the latter successively complete their printingstrokes. The pad F. remains in contact with the type D during aconsiderable portion of the stroke of the latter, thus insuring a fullsupply of ink to the type and a good impression thereof upon the paper.

The pad E is kept moist with ink in any suitable manner. Theimpression-roller G is mounted to turn on a fixed shaft H, forming anintegral part of the carriage H, fitted to slide longitudinally in theframe A, the latter being provided for this purpose near its upper endwith a rail A, on which travel the grooved wheels H journaled in theshaft H.

The bottom of the carriage H is provided with downwardly-extending pinsH straddling a rod A forming part of the frame A, so as to prevent thecarriage from swinging transversely, but permitting the same to movelongitudinally, the carriage being suspended on the rail A, as abovedescribed.

On the lower part of the carriage H is secured the escapement-rack I,engaged by the escapement-pawl I, mounted in the usual manner in theframe J, fulcrumed on the base of the frame A and connected by a link Jwith a longitudinally-extendingleverJ ,made U-shaped and having itsmiddle portion resting on top of the keys B, so that when one of thelatter is pressed a swinging motion is given to the frame J to permitthe pawl I to release the rack I for shifting the impressionroller Gfrom the right to the left on the return movement of the key B. The freelower ends of this U-shaped lever or bail J may be pivoted upon the endportions of the keylever fulcrum-rod B, as shown in Fig. 6. As theconstruction of the escapement and the mode of its operation are thesame as that of the ordinary type-writing machines, further descriptionof the same is not deemed necessary.

A suitable guard R is secured to the carriage II, it being understoodthat the paper is passed around the front of the impressionroller G,which may be rotated by gear G and pinion O to produce a line-spacemovement of the paper.

Having described my invention, I claim- 1. In a front-strikewriting-machine, the combination of a curved system of upwardly andrearwardly striking type-bars, and a system of parallel levers havingkeys at their forward ends and upwardly-extending arms ofgradually-increasing length from the center of the system outwardly inboth directions formed or fixed upon their rear pivoted ends, the upperends of said arms being operatively connected to the type-bars.

2. In a front-strike Writing-machine, the combination of a system ofupwardly and rearwardly striking type-bars, a system of parallel leversextending rearwardly from the keyboard beneath said type-bars, andpivoted at their rear portions, and a series of upwardlyextending armsfixed or formed upon said levers, the upper free ends of said arms beingbent and operatively connected to said type-bars.

3. In a front-strike writing-machine, the combination of a system ofrearwardly-striking type-bars, and a system of pivoted bellcrankscomprising members extending forwardly from said pivots and membersextending upwardly from said pivots, said upwardly-extending membershaving gears for engagement with said type-bars, and saidforwardlyextending members having fingerkeys.

4. In a front-strike writing-machine, the combination of a system ofupwardly and rearwardly striking type-bars mounted in avertically-arranged segment, a system of upright levers of varyinglengths pivoted at their lower ends beneath said type-bars and carryingdevices at their upper ends which engage said type-bars, and a system offorwardly-extending parallel key-bearing arms operatively connected tosaid levers.

5. In a front-strike writing-machine, the combination of a system ofrearwardly-striking type-bars and a series of bell-cranks having acommon fulcrum-rod, said bell-cranks com prising members extendingforwardly and other members extending upwardly from said fulcrum-rod,said forwardly-extending members having keys at their front ends andsaid upwardlyextending members carrying devices for engaging saidtype-bars.

6. In a front-strike Writing-machine, the combination of a series ofrearwardly-swinging type-bars having toothed hubs, and a series ofbell-cranks branching upwardly and forwardly from their pivots, theupper ends of said bell-cranks carrying gears for engaging said type-barhubs and the forward ends of said bell-cran ks being provided withfingerkeys.

7. In a frontstrike writing-machine, the combination of a bell-crankbearing at its forward end a key, a swinging type-bar, and a segmenthaving a radial slot in which said type-bar is mounted, the upper end ofsaid bell-crank working in said radial slot and being operativelyconnected to said type-bar, substantially as set forth.

8. In a front-strike writing-machine, the combination of a segmentprovided with a series of radial slots, a series of forwardlyextendingtype-bars having toothed hubs their upper ends directly engage saidracks.

10. In a front-strike writing-machine, the combination of a series ofradially-arranged rearwardly-striking type-bars having toothed hubs, aseries of horizontally-sliding racks engaging said hubs, a series ofupright 1evers, as B arranged below said racks and engaging therewith, aseries of finger-keys,

as B arranged forwardly of said type-bars, and connections from saidfinger-keys to said upright levers.

11. In a front-strike writing-machine, the

combination of a series of radially-arranged rearwardly-strikingtype-bars having toothed hubs, a series of sliding racks engaging saidhubs, a series of upright levers, as B, ar-

ranged below said racks and engaging theresaid type-bar and constructedto remain in contact with the type during aportion of the type-barstroke, as set forth.

13. A type-writing machine, provided with a type-bar, and an inkingdevice held on the type end of the said bar, the said inking devicecomprising a spring attached to the type-bar, a block carried by thespring, an inking-pad carried by the block, and a foot on which extendsa portion of the said pad, substantially as shown and described.

14. In a type-writing machine, the combination with an impression-rollerof a typebar adapted to swing to and from the said impression-roller,and an inking device carried by the said type-bar and normally inengagement with the type on the type-bar, the said inking device beingthrown off the type on the bar as the bar moves into an uppermostposition, by the inking device striking the said roller, substantiallyas shown and described.

15. A type-writing machine, comprising type-barsmounted to swing andformed at.

their fulcrum ends with teeth, a segmental casing formed with radialslots, being guideways for the said type-bars, racks fitted to slideloosely in the said casing and in mesh with the teeth on the saidtype-bars, and keys mounted to swing and each formed with a fork looselyengaging a corresponding rack so as to shift the latter laterally in thesaid casing to actuate the type-bars, substantially as shown anddescribed.

16. A type-writing machine provided with a type-bar mounted to swing andformed at its fulcrumed end with teeth, a toothed rack fitted to slideand in mesh with the said teeth, and a key mounted to swing and formedwith a fork, the end members of which engage the ends of the said rack,to shift the latter forward and backward to actuate the type-bar bothfor its up and down movement, substantially as shown and described.

17. In a type-writing machine, the combination of type-bar D, slidingrack F engaged thereto, and a pivoted lever B havinga segmental or aconvex surface 13 which contacts with said rack, and also having meansfor effecting a sliding movement of said rack.

18. A type-writing machine provided with a type-bar mounted to swing andformed at its fulcrum end with teeth, a toothed rack in mesh with saidteeth, and a key mounted to swing and formed with a fork, the endmembers of which engage the ends of the rack, and the segmental bottomof the fork engages the under side of the rack, substantially as shownand described.

19. In a type-writing machine, the combination of a swinging type barhaving a toothed hub, a segment having a radial slot in which saidtype-bar hub works, a key-operated lever one of whose ends is arrangedin proximity to said hub, and a rack placed loosely between saidtype-bar hub and said end of said lever.

20. In a type-writing machine, the combination of a swinging type barhaving a toothed hub, a segment having a radial slot in which saidtype-bar hub works, a key-operated lever one of whose ends works in saidslot, and a rack loosely placed in said slot between said type-bar huband said end of said lever.

21. A type-writing machine provided with a type-bar having a hook-shapedend and formed with teeth on the periphery of the hook member thereof, arack having its teeth at the middle of its length and provided with arecess in its inner end adjacent to the teeth, the outer end of the rackbeing plain, and means for operating the rack, substantially asdescribed.

22. A type-writing machine provided with a type-bar mounted to swing andformed with teeth on its fulcrumed end, a key provided with anupwardly-extending fork at its inner end, and a rack held within thefork of the key and in mesh with the teeth of the typebar, substantiallyas described.

23. A type-writing machine having an inking device on the outer end ofeach of its typebars, substantially as described.

24. In a type-writing machine a type-bar provided with an inking deviceyieldingly supported on its outer end, substantially as described.

25. In a type-writing machine, a key provided with anupwardly-projecting member having a forked end, the portion of the forkbetween its members being convex, in combination with a rack held withinthe fork of the key, and a type-bar provided with teeth meshing with thesaid rack-bar, substantially as described.

26. In a front-strike writing-machine, the combination of a series ofrearwardly-striking radial pivotal type-bars, a series of up-'wardly-extending operating-levers pivoted below the hubs of saidtype-bars, and a series of racks engaging said typebar hubs and looselyconnected to said levers.

27. In a type-writing machine, the combination of a series of type-bars,an inking device arranged upon each type-bar and normally in contactwith the type thereon, and a common intercepting device for separatingsaid inking devices from said types, when the latter are making theirprinting strokes, substantially as set forth.

28. In a type-writing machine, the combination of a type-bar, aninking-pad, a spring tending to hold said pad in contact with the typeupon said bar, and means for separating said pad from said type duringthe printing stroke of the latter, substantially as set forth.

29. In a type-writing machine, the combination of a type-bar, a springmounted thereon, an inking-pad carried by said spring, and means forseparating said pad from said type during the printing stroke of thelatter, sub stantially as set forth.

30. In a front-strike writing-machine, the

combination of a series of type-bars, and a seand Territory of Arizona,this 25th day of Ocries of key-bearing bell-cranks fulcrumed at tober,A. D. 1899. their rear portions and connected at their upper free endsto said type-bars, the upper por- PETER NILSON' 5 Lions of saidbell-cranks being bent inwardly Witnesses:

toward the middle of the machine. D. J. SULLIVAN,

Signed at Jerome, in the county of Yavapai l ROBT. B. BAUMER.

